Can someone me with equating coefficients? (x+4)(ax^2 + bx + c) = -2x^3 -7x^2 + 3x -4

Rewrite the following without an exponent. (5/8)-1

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

The product of 3 and a number increased by 8 is 31 written as an equation